Izindaba

I-Composite geomembrane iyimpahla ye-geotextile ephikisana ne-seepage eyakhiwe ngefilimu yepulasitiki njenge-anti-seepage substrate nendwangu engalukiwe. Ukusebenza kwayo kwe-anti-seepage ikakhulukazi kuncike ekusebenzeni kwe-anti-seepage yefilimu yepulasitiki. Amafilimu epulasitiki asetshenziselwa izinhlelo zokulwa nokungaboni ngaso linye ekhaya nakwamanye amazwe ikakhulukazi ahlanganisa i-polyvinyl chloride (PVC), i-polyethylene (PE), kanye ne-ethylene/vinyl acetate copolymer (EVA). Ziwuhlobo lwezinto eziguquguqukayo zamakhemikhali e-polymer ezine-gravity ethize ephansi, ukunwebeka okuqinile, ukuguquguquka okuphezulu kokuguquguquka, ukumelana nokugqwala, ukumelana nezinga lokushisa eliphansi, nokumelana nesithwathwa okuhle.

Impilo yesevisi yama-geomembranes ayinhlanganisela inqunywa ngokuyinhloko ukuthi ingabe ifilimu yepulasitiki ilahlekelwa yizindawo zayo zokunqanda ukugeleza nokungangeni kwamanzi. Ngokwezindinganiso zikazwelonke zaseSoviet, amafilimu e-polyethylene anobukhulu obungu-0.2m kanye nezinzile ezisetshenziselwa ubunjiniyela bamanzi angasebenza iminyaka engu-40-50 ngaphansi kwezimo zamanzi acacile kanye neminyaka engu-30-40 ngaphansi kwezimo zokukhucululwa kwendle. Ngakho-ke, impilo yesevisi ye-geomembrane eyinhlanganisela yanele ukuhlangabezana nezidingo zokunqanda ukuphuma kwedamu.

Ububanzi be-geomembrane
Idamu ledamu ekuqaleni laliwudonga oluwumgogodla, kodwa ngenxa yokuwa kwedamu, ingxenye engaphezulu yodonga oluwumgogodla yanqanyulwa. Ukuze kuxazululwe inkinga ye-anti-seepage ephezulu, udonga oluthambekele oluphikisana nokubona ikhasi lwengezwe ekuqaleni. Ngokokuhlolwa nokuhlaziywa kokuphepha kwedamu laseZhoutou Reservoir, ukuze kuxazululwe indawo evuzayo ebuthakathaka kanye nokuvuza kwesisekelo sedamu okubangelwa ukudilika kwenhlabathi okuningi kwedamu, izinyathelo eziqondile zokunqanda ukugeleza kwamanzi ezifana ne-bedrock curtain grouting, indawo yokuxhumana, ukushaywa kanye ikhethini lokubamba kahle eligcwalisa ikhethini, kanye nodonga lwepuleti lepuleti lesifutho esinomfutho ophezulu we-anti-seepage lamukelwa. Udonga oluphezulu oluthambekele lumbozwe nge-geomembrane eyinhlanganisela ye-anti-seepage, futhi luxhunywe odongeni oluqondile olumelene nokuvuleka phansi, lufinyelele ukuphakama okungu-358.0m (0.97m ngaphezu kwezinga lesheke lezikhukhula)
umsebenzi omkhulu
1. Ukuhlanganisa imisebenzi evimbela ukugeleza kwamanzi kanye ne-drainage, kuyilapho futhi inemisebenzi efana nokuhlukanisa kanye nokuqinisa.
2. Amandla aphezulu ayinhlanganisela, amandla acwebile aphezulu, nokumelana nokubhoboza okuphezulu.
3. Umthamo wokudonsa amanzi onamandla, i-coefficient ephezulu yokungqubuzana, kanye ne-coefficient yomugqa wokunweba ophansi.